resources/src/mediawiki.special.preferences.ooui/timezone.js

   1 /*!
   2  * JavaScript for Special:Preferences: Timezone field enhancements.
   3  */
   4 ( function () {
   5         mw.hook( 'htmlform.enhance' ).add( function ( $root ) {
   6                 var timezoneWidget, $localtimeHolder, servertime,
   7                         $target = $root.find( '#wpTimeCorrection' );
   8
   9                 if (
  10                         !$target.length ||
  11                         $target.closest( '.mw-htmlform-autoinfuse-lazy' ).length
  12                 ) {
  13                         return;
  14                 }
  15
  16                 // Timezone functions.
  17                 // Guesses Timezone from browser and updates fields onchange.
  18
  19                 // This is identical to OO.ui.infuse( ... ), but it makes the class name of the result known.
  20                 try {
  21                         timezoneWidget = mw.widgets.SelectWithInputWidget.static.infuse( $target );
  22                 } catch ( err ) {
  23                         // This preference could theoretically be disabled ($wgHiddenPrefs)
  24                         timezoneWidget = null;
  25                 }
  26
  27                 $localtimeHolder = $( '#wpLocalTime' );
  28                 servertime = parseInt( $( 'input[name="wpServerTime"]' ).val(), 10 );
  29
  30                 function minutesToHours( min ) {
  31                         var tzHour = Math.floor( Math.abs( min ) / 60 ),
  32                                 tzMin = Math.abs( min ) % 60,
  33                                 tzString = ( ( min >= 0 ) ? '' : '-' ) + ( ( tzHour < 10 ) ? '0' : '' ) + tzHour +
  34                                         ':' + ( ( tzMin < 10 ) ? '0' : '' ) + tzMin;
  35                         return tzString;
  36                 }
  37
  38                 function hoursToMinutes( hour ) {
  39                         var minutes,
  40                                 arr = hour.split( ':' );
  41
  42                         arr[ 0 ] = parseInt( arr[ 0 ], 10 );
  43
  44                         if ( arr.length === 1 ) {
  45                                 // Specification is of the form [-]XX
  46                                 minutes = arr[ 0 ] * 60;
  47                         } else {
  48                                 // Specification is of the form [-]XX:XX
  49                                 minutes = Math.abs( arr[ 0 ] ) * 60 + parseInt( arr[ 1 ], 10 );
  50                                 if ( arr[ 0 ] < 0 ) {
  51                                         minutes *= -1;
  52                                 }
  53                         }
  54                         // Gracefully handle non-numbers.
  55                         if ( isNaN( minutes ) ) {
  56                                 return 0;
  57                         } else {
  58                                 return minutes;
  59                         }
  60                 }
  61
  62                 function updateTimezoneSelection() {
  63                         var minuteDiff, localTime,
  64                                 type = timezoneWidget.dropdowninput.getValue();
  65
  66                         if ( type === 'other' ) {
  67                                 // User specified time zone manually in <input>
  68                                 // Grab data from the textbox, parse it.
  69                                 minuteDiff = hoursToMinutes( timezoneWidget.textinput.getValue() );
  70                         } else {
  71                                 // Time zone not manually specified by user
  72                                 if ( type === 'guess' ) {
  73                                         // Get browser timezone & fill it in
  74                                         minuteDiff = -( new Date().getTimezoneOffset() );
  75                                         timezoneWidget.textinput.setValue( minutesToHours( minuteDiff ) );
  76                                         timezoneWidget.dropdowninput.setValue( 'other' );
  77                                 } else {
  78                                         // Grab data from the dropdown value
  79                                         minuteDiff = parseInt( type.split( '|' )[ 1 ], 10 ) || 0;
  80                                 }
  81                         }
  82
  83                         // Determine local time from server time and minutes difference, for display.
  84                         localTime = servertime + minuteDiff;
  85
  86                         // Bring time within the [0,1440) range.
  87                         localTime = ( ( localTime % 1440 ) + 1440 ) % 1440;
  88
  89                         $localtimeHolder.text( mw.language.convertNumber( minutesToHours( localTime ) ) );
  90                 }
  91
  92                 if ( timezoneWidget ) {
  93                         timezoneWidget.dropdowninput.on( 'change', updateTimezoneSelection );
  94                         timezoneWidget.textinput.on( 'change', updateTimezoneSelection );
  95                         updateTimezoneSelection();
  96                 }
  97
  98         } );
  99 }() );